Israel l



I. L. G'. RICE.

0&1 Brake.

`No. 108,830. Patented NOV. l, 1870.

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Letters Patent No. 108,830, dated November 1, 1870.

IMPROVEMENT IN RAILWAY-CAR BRAKES.

The Schedule referred to in these Letters Patent and making part of the same.

To Il rhone it may concern {Isnlmn L. (X Bien, ot Cambridge, in the county vofiiddlesex and. State of Massachusetts, have in? The Nature and Object of the Invention.

The nature ol' mfinvention consists in connecting with the axle ot' a. locomotive a cam or series of cams, said caniheing seal-ranged, in connection with a clutch device and the axle, that the cam may revolve with the axle or not, :1t-thc will otl the driver, and in comhininr with this cam a rod, which connects with the hreakTlevers ot. the following cars, the cam heiug so made that it will only draw the rod a certain distance,'thus producing a certain pressure upon thehrakes. Then the rod is let oll, and the brake relieved, until the'cam has time to complete a whole or part'revolution, so as' to bring the same cam or another to bear on the rod.

lhe ohjeel ot'my arrangement heingto maken brake that shall he operated bythe engine, yet have the.

power so applied that it may bc self-limiting.

Dcscription'qf' (llc Accompanying Drau-ing. Fioure 1 is ay )lau showine the under side ofan en- I D gmc and tender-ear.

Figure 2 shows a vertical section ot' the saine. Fifure 3 shows an enlarred elevation ot' the cam,

General Description. l A represents one ot' the' driving-axles of the engine,

which carries the fixed disk D, land also the wheel or clutch B.

One side ot' this clutch B has notches to correspond to similar notches on the tixeddisk l), so that when the clutch B is moved by the lever N against the disk D ift will have to revolve with the axle. The other side of the clutch 4B is formed, as shown in ti 3,' into a series of cams, c d e.

11 is a rod, bent, as shown in figs. l and 2, so that it may be operated upon by the cams.

This rod H is connected byu chain, K, to the brakelever L.

This cam-wheel 13 and rod 1I, together with the brake-attachnient, are so arranged that; when t-he brake is drawn up to a certain pressure the rod. will slip hy 'the cam und the pressure on the brake will be removed until :mother cam begins to act.

By this arrangement th@,brakc-pressure exerted by the engine is not excessive or constant, and the action will be so gradual as not to canse accidents.

The intermittentaction ot the brake is one of the principal features of' my invention.

I claim as my invent-ion.

lh'e-v cam-wheel B, constructed as described, in conlbination with the disk D, axle A, ro'd H, and brakelever L, as and for the purpose set forth.

v ISRAEL LLG. RICE.

Witnesses:

FRANK G. PARKER, WILLIAM Ensor'. 

